Printing-telegraph apparatus.



no. PEARNE.

PRINTING TELEGRA'PII APPARATUS.

*n APPLICATION FILED SEPT. 3., 1907. Lffih msnm my 13, w15.

I *t 6 SHEETS-SHEET I.

y l 'Y f r @3Q/MM2@ ww@ @/ff INITNESSESI INVENTOFI F. n. PEARNE.-

PRINTING TELEGFAPH APPARATUS.

APPLICATION FILED SEPT. 3,1907.

L 1459?@ manned July 13, 1915.

G SHEETS-SHEET 2.

ATTRNEY.

F. D. PIAIINE.

PRINTING TELEGRAPH APPARATUSI'.

Agb.,

a' I N V EN'TOR MIAT? Parented July 13|, 1915.

@I QJ APPLICATION FILED SEPT. 3| 1907.

wir

WI TNESSES @y IMI/5I f ATTORNEY. f

F; D. PEARNEl PRINTING TELEGRAPH APPARATUS.

APPLucATloN HLED SEPT.` s, 1907 653 Z55 /yl /75 fag Patented July 13, ,1915.

GSHEETSMSHEET 4.

TTOHNEV F. D. PEAR'NE. PRINTING TELEGRAPH APPARATUS.

APPLICATION FILED 'SEPT- 3 I907- 6 SHEETS-SHEET 6- SATS TFT @FI FRANK D. PEARNE, OF CHICAGO, ILLINOIS, ASSIGNOR 0F ONE-HALF IO JAMES E.

MARTINE, 0F CHICAGO, ILLINOIS. Y

PRINTING-TELEGRAPH APIEAIMHEUS.A

y Speccation of Letters Patent.

Patented July 13, 1915.

Application led September 3, 1907. Serial No. 391,020.

Be it known that I, FRANK D. PEARNE, a citizen of the United States, residing at Chicago, countyof Cook, State of Illinois, have madea certain new and useful Invention in PrintingeTelegraph Apparatus, of which .may all be of a given strength, or of different strengths, or may be positive or negative, as may be required.

A further object is to provide an appa-' ratiis of the class referred to wherein various combinati ins of electrical impulses may be sent over the line wire to effect the printing operation at the distanty or receiving end of the line, the sending of such combinations of impulses being controlled automatically by `the depressing'of keys, or otherwise, at the lsending station.

A further object is to provide an appai'atiis of theI class described wherein ellicient control is maintained over thevarious parts.

Uther objects of the invention will appear more fully hereinafter.

The invention consists substantiallyA in the construction, combination, location and arrangement cf parts, all as will be more fully hereinafter set forth, as shown in the accompanying drawings, and iinally pointed out in the appended claims. Q

Referring to the accompanying drawings, and tothe various views and reference signs appearing thereon,-Figiii'c 1 is a diagram-A matic view illustrating thc operation of the kevs of the kev board and the circuits controlled thereby, and also illustrating the action 'if the carriage-return and the shift keys. Fig. 9 isa diagrammatic view illusti'atiiig the lwiring connections of the relay spools of the mechanism employed in selecting and distributing the impulses t0 be sent over the line wire with the depression of the keys of the key board. Fig. 3 is a diagrammatic view illustrating the Wiring connections of theselecting and distributing apparatus. Fig. 4 is a view somewhat diagrammatic, showing the wiring connections of the sending apparatus. Fig. 5 is a top plan view of the apparatus employed for sending the selected and distributed impulses to the line wire. Fig. 6 is a View in side elevation of the same. Fig. 7 is a broken view in section of a magnetic clutch employed in connection with the sending apparatus. Fig. 8 is a face view of one member of the magnetic clutch shown in Fig. 7. Fig. 9 is a similar view of the other mem! ber of the magnetic clutch. Fig. 10 is a broken view in side elevation of the clutch member shown in Fig. 9. Figs. 11, 12, 13, 14, a ^l 15, are detail views of various contacts employed in connection with the sending apparatus shown in Figs. 4, 5 and 6. Figs. 16, 17 A'and 18 are, respectively edge, face and top plan detail views of the escapement employed in connection with)v the sender. Figs. 19 and 2O are detail views of the stop arms employed in connection with the escapement.

l The same part is designated bythe same reference sign wherever it occurs throughout the several views.

In a printing telegraph apparatus embodying the principles of my invention I propose to send a series of electrical impulses in quick succession over a line wire to operate thc receiving apparatus at the distant station. Inasmuch as the present invention concerns itself only with the apparatus for selecting controlling distributing and sending such impulses it is unnecessary to show or describe the reeeiif'ing apparatus. IThe electrical impulses to be seu/t over the line wire may be of any desired r suitable character. In the particular form shown, but to which my invention is not to be limited or restricted, I employ impulses of yfour different characters, na/mely, a strong positive current, a weak positive current, a strong negative and a weak negative. It is obvious that other forms or variations may be employed, but these variations, above named, are sufficient for purposes of illustration. I also propose to send said impulses in groups of ,three each, though in this respect I do 10s, 104, 105, 10c, 107, 10s, as may 'be desired may be employed. Coperating with the stop arms 77 78, is an escapement 76,

vhaving the vfork arms 86, 113. -This escapement is controlled by an electromagnet 73, a pole piece 205, carried by escapement 76 being attracted by said magnet, when the latter is energized, and against the action of a spring 206'. In normal position of the parts when the sleeve 8/1 isfat rest, one or the other of the stop arms 77, 78, bears against the fork arm'113, of the escapement, as shown in Fig. 6 thereby locking the sleeve against rotative movement. Als above explained the sleeve 84 is designed to remain at rest until the member 79 of the magnetic clutch is energized, thereby effecting a rotative movement of the coperating clutch member 80, which constitutes the armature of the clutch, the members 79, 80,-being respectively carried bythe shaft v83, and the sleeve 84. Consequently whenever the circuit of the magnetic clutchlmember'79 is completed, the sleeve 84 is coupled to rotate with shaft 83. Before the completion of the circuit of the magnetic clutch, however, it

is desirable to operate the escapement 76, in order to release whichever one of 'the stop arms 7 7 78, that maybe bearing against 4the l l fork arm 113, of said escapement. Whenever, therefore, lit is desired to start up thev sender, the circuit of magnet 73 is .com-

pleted, thereby rocking the escapement 76.

When this escapement has completed about one half of its movement under the iniuence of the attractive force of the magnet 73, the stop arm 77, in the instance shown is released and hence the sleeve 84, is free to rotate. At the same time the tail 4of the escapement'engages a pair of contacts 63,-and separates them; The separation of the members of the pair of contacts 63, causes current to flow through the clutchv magnet, thereby .Y

initiating the rotativeA movement ofv the sleeve 84. However only a'half'revolution is thus' imparted tothe. sleeve 841,.l and the various parts carried thereby, since the circuit of, the clutch magnet includes the divided commutato1112, and 'at `eachA half revolution of said commutatorthe contact spring 111, passes from one ofthe segments 65, 66, to the other thereby opening the circuit. At the Sametime the circuit of the clutch magnet is broken the prong or fork 86, of the escapement 76, has been brought into the path of the other stop arm 78. Since the circuit of magnet 73 was not broken at the same time with that of the clutch magnet, the escapement 76, is held in position for the prong 86, thereof to obstruct the stop arm 78. This relation of the parts is maintained until the circuit of magnet 73 is broken, and, as will be more fully explained hereinafter, the circuit of the escapelnent controlling magnet is not broken until current coming from the distributer is cut off, or, in other words, until the key which has been depressed is released.

The actuation of the escapement 76, in advance of the actuation of the magnetic clutch I regard as a desirable and important feature for the reason that thereby the stop arm 77 or 78, as the case may be, is released before power is applied to the sleeve v84, to rotate the same. Otherwise, the application of rotative power to the sleeve would cause the stop arm which is bearing against the escapementto press the harder againstsaid escapement and hence render the operation thereof difficult. By completing'the circuit of magnet 73, however, in advance of the completion of the circuit ofthe coil of the magneticclutch the stop arm is released before the rotative power is applied tothe Y sleeve, and hence the parts are enabled to work .easily and smoothly.

By reference to. Fig. 5 it will be seen that'.

the end of the stop arm is triangular in shape, and by reference toFig. 18, it will be noticed that the prong or fork 113, of the escapement, is not as vbroad as prong or fork 86, consequently, when the circuit of magnet 73, is broken, that is, when the depressed key of the keyboard is released, the escapement 76, is restored to its no'rnialposition lthe retractile spring 206, thereby bring Ying the prong or fork 113, into position for thestop arm 7 8,'or 77 to bear thereagainst,

the fiat side of the triangular shaped stop-- arm bearing against lthe prong or fork,

while the edge thereof presented toward thev other prong or fork 86, clears said prong,

as clearly shown in Fig. 4, andinsures the ready passage of the stop arm between said prongs or forks when the escapement is again'actuated by thecompleti'on of the cirmit o magnet 73, that. is,'whe'n the next key of the keyboard is depressed.

As above noted, themembers of the siX pairs of contacts are shown as being suevcessively closed upon eachother with each A,

half revolution ofv thedrum 61, and one pair, 108, are'left closed upon each other when the drum -completes `its half revolution; The-object ofthus Vleaving the contacts 108, closed upon each other during the' time the drum remains stationary, that is,

while the automatic sender is not in' use for e contacts: to 'be s sending impifses u line grounded is not in use thor, be received from thc necessity of Switch to .ennbic ccivci.

S 1b-ove no d, die number 'pairs of. uccesisivefy dosed by nach had? rotation oi! *dre lruni 51, inzijy be Varicci :is desired. and reqnrod. ,in 311e ticuizu form Shown, o which, iiowcvcr, L invention is nofgn be liniiie, oniy the ccntzicts 103. 1053 and 10?" zur@ concerned ifi con-- noctura; 'the impulse Circuits *from 15b@ cisf tributcr to the lino. The Giner contacts 104i, 106, :und 103 :1ro mnlioycd to connect thc liuc Lio ground fiftcr euch impuls@ "nhercby cnubiing the 1in@ to be. conipctcly dincharged after @zich ininuise is seni.: bereover. This 1 regard :1S :i Valuabe {cani-re of my invention :is i insures the bes rc,- suits.

From *cbc foregoing' doscri'irtion it ,vi/iii bo seen that provide :n Sending; apparatus #for completing the inuiusc circuitfs o the line, und which Sonder, when once 'put ino operation is :iuzomutic .in nation. 1i, will riso be #con that tbe. sonder iS Qu ino 0pcrution bybc depressing of n, bei; ai; the it will also bc seen that 'iii-c ine und @round connccio are effccteci by n rouiing wirt, :i commet@ cycle of opcrzibion boing completed with @zich hub? revolution of Such part und conscqucuiy when 'die scudcr once operated, i; is not necessary to wait until said Sender roturis to :i nur nini 'posiion before its operation may be rcpcutcd, but tho apparatus ready 'to reprint operation over und over again by ibs moro uci: of cou'uliictinfl oiecric ;ircui. R1 will niso be secu ibut the, circui of the clucb through which 5u@ 'ixiu'ivc moife" manifs oil tbc Send/cr nrcl ciccd is ouin*-- iunicuiijv broken ut cucb bnrf rovoiuion of be Suudor ruin. und i-bnt 'the cscapmncn; dri'iffa :mow ouiy oncy L@op :mn ilo nous u'i'uxu u kof; duprusci. un Jimi? no 'furifbcr c-il'ierntiou oi be somber is possibi@ un iii Lbc kay i'olcscd. it wii?. riso be Seen ibut by cmpioyinp; die heavy insuiai ing; or burni rubber blocks; 203 ou the ruin to tbc ium'ubcrs of tbc uuirs of contacts, which ooipcrutc tborcu'itb, upon thcnisclves, 'die horny 1in@ currcuts arc previ-mind from @our iuunicutiug with bc drum or gearing or sum'mrtugj uor-uwziuus.

'resistance 1G, 1s arranged in conncc'lgi' i. iustrozc 110 Qrincipcf oi? my invcnilion, il

hosc 01 tbc 'third ,group nrc nuinbcrcL ri spcctively 9, 10, 11111101 12. iin Fig. 3 univ on@ winding circuit of euch of thc relays s Shown und this circuituscd Simply lock the rainy in poiiton nier it has been operated.

1u in@ operation of the :appa 'abus cin bodjaingg my ,invention tbc current bc seni to the liuc muy bo procured 'from any Sui?,- uble or conriicnt sourcc. 11mm shown two gcneraors 13, 1-1, for ibis purpofsc. rcsiisnnce 3, is arranged in connccl'ion u. 'hnl posiairc Side of generator 5. und

with in@ Side of the gencruior tbe positive side o1 c, renc 'artnr 12:3, inclufcs coutuc l Q07, 20S nur? Q09, rcspccivcly, controlicci by '-hc rcbij/JS 1, 5 und i), said circui'y containing no rcsisy uncc, and consmlueniy when either ons oi" tbe rcnys 1, or 9 is operatori a, srbngf ponitivc inipuise or current is suppiicd to iii@ contacts 103, or 10T, :is tbc crise muy bc dcicnding upon tbc puricuiur relay whf ,I ixus been operated, and which contacta 10 105, 10?', as boro cxpiuincd, arc conti-oil i by 'thc nruui of ihn auoinzi'ix sencr :1nd, proper tiuws :iro dormi upon themseb compiec the circuis in which tbcy :irc tained to tbc Unc. rnotbcr circur from the p( mirc Sid@ of thc generator 123 incudcS ibc rcsisgzmce 15, und also Contactin 210., 9,11 mui 212, rcspecivcly Conilroic by the relays ila 6 und 1G, und ccusoqucniy when wither oi' Suid 'rcbiys is operated :i vicoli 'p0 1i v0 1 puis@ or (fruire/n is suppic 30 ons or olbcr of the contacts 103, 105 or 107 'A pending upon tbc puricubir rainy iii n 1^ bren opcr f* sance, inchu w, which cbr/1S f1, S nenn rciuys a irrcr; N, :ic-corail served that each of the contacts 207, 210, 213 and 216 of the rst group of four relays, 1, 2, 3 and fl comprises a make-andbreak, one part of each being normally closed when the relay is not in operation, and this part heilig broken and the other part closed when the relay is operated. lt will also be seen that all the make parts -of these contacts are in series with the line controlling ccntact103, but that when any one of the relays is operated the part of the contact controlled thereby which is normally closed, is broken and the part which is normally open is closed thereby making it impossible to simultaneously operate more than one relay of the same group, and consequently only one relay of such group can be in operation at any one time. Thus, suppose the relay 2 to be operated to send a weak positive current to line, the normally closed part of make-and-break contact 210 which is in series with the similar parts of the make-and-break contacts 213 and 216, is broken thereby making it impossible to operate either of the relays 3 or 4. 1f, how* ever, the relay 1, be operated while relay 2E is in operation, which, of course is possible, then the normally closed part of 1nakeand break contact 207 controlled by relay 1 would be opened, and as this part is in series with the contact 210 of relay 2, it follows that the operation of relay 1 would instantly render relay 2 inoperative, and consequently only one relay of each group can be effectively operated at a time. Similarly the contacts 208, 211, 21/1 and 217 of the second group of relays have the same construction, relation and operation with reference to their respective relays 5, 6, 7 and 8 and the line 'controlling contact 105. And the contacts 209, 212, 215 and'218 of the third group have the same .construction relation and operation with reference to their respective relays 9, 10, 11 and 12, and the line controlling contacts 107. From this arrangement it will be readily seen that only f one relay or" each group is operated or energized at one time, but the operation of a relay in one group may be simultaneous' with the operation of one relay only in each of the other two groups. In this manner l am enabled to send to the line the yarious groups or combinations of impulses which l have hereinabove explained, such combinations being made up of any three desired characters of current or impulses that is, a strong positive, a Weak positive a Weak negative and a strong negative. It is also obvious that the system may -be readily eX- tended-to take care of or to accommodate additional variations of current strength by variously introducing additional' resistances or otherwise, as may be desired.

l? rom the foregoing description it Will be seen that when relay l, 5 or 9 is energized a strong positive current circuit is completed to the line contact 103, 105 or 107 as the case may be; and when either of relays 2, 6 or 10 is energized a weak positive current circuit is completed to line contacts 103, 105 or 107, as the case may be; and when either ot' relays 3, 7 or 11 is energized a Weak negative current circuit is completed to contact 103, 105 or 107, respectively; and 'that when either of the relays 4, S or 12 is energized a strong negative current circuit is, in like manner completed to contact 103, 105 or 107, as the case may be.

In the operation of the automatic sender and during each half revolution of the drum 61, the contact 103, lis first connected to the line and then such connection is broken. mmediately thereafter the contact 104:, is

connected to the line, thereby grounding the latter, and then such connection is broken. Next, the connection of contact 105 to line is made and broken, and then the line grounded through Contact 106. N ext and finally the connection of contact 107 to'line is made and broken, and the line grounded through contact 108, the latter condition remaining until the sender is again operated. Thus the desir ed groups or combinations of impulses are selected and sent to line. Since only one relay oi'each group of the distributor can be operated at one time, it is obvious that interference of positive andneg'ative currents, or neutralization cf the impulses is avoided. For instance, sup p ose relay 1 of the first group, relay 8 of tbe second group and relay 10 of the third group be energized at the same time. rlfhereupon a strong positive current circuit is completed to line contact 103, a strongl negative to line contact 105, and a weak positive to the Contact 107 and the half revolution of the automatic sender completes f I have above indicated that each relay of I the distributer controls a series of contacts, and l have described the operation and funcf tion of the ma'ke-and-break contact associ@ ated With each= relay. Another contact controlled by each relay isa simple make, and it controls a circuit Which serves to lock or hold the relay in its operated position. This contact is designated by reference sign 219, i

and all-of the contacts 219 are yso connected that when any one of the relays is energized circuit is made through the contact 219,

associated therewith, and through a coil or winding of the relay which is sufcient to retain said relay energized until the locking circuit is broken. Included in this locking circuit are contacts 31, 30 Which4 are conrudcd bj th: flummin'u by u 10h13,' of?? the ciuru; only during Ulm @Ucraina o This loukugr circu'@ ma: f be uf amish wut-.1ct i219.

10 meh @uninet locking @mi thence :lo common Us it MN .n hm t 551m ihm um as noi www 84, and also causing the relay 27, to return to its normal inactive condition. By this time the stop arm 78, strikes against the prong S6 of the escapement and is thereby blocked against further rotative movement. During the half revolution imparted, as

above described, to the sleeve 84, and the mally closed but are opened by the escape# parts carried by it, the drum 61, has performed its duty of successively connecting the generator circuits as determined by the relays 1, 8 and 10, to line 22 through the line contacts 103, 105 and 107, with an intermediate line connection to ground, and at the completion of the movement leaves the line connected to ground through the ground contacts 106, as above explained. By the breaking of the circuit of relay 27 and the return of said relay to normal, the locking circuit of the distributer relays 1, S and 10, which, in the example given, have been operated, is also broken. But these relays dol not return to the normal or inactive position upon the breaking of their locking circuit, if the key of the key board which was depressed in the' first instance remained depressed, for, suppose the key is held down, then current will continue to flow from battery 1S, Fig. 3, to wire 23,- Wire 24, to Wire 25, Fig. 4, wire 90, and resistance R2, and then it divides, part assing through Wire 225, contacts 75, relay 2, to ground or return at 26, and the other part passing from Wire 90, through contacts 95, and inagnet 73, to ground or return. Consequently prong 86, of the esca ement 76, is still held in front of the stop K8,- although not necessary, since the magnet clutch, at this time is inactive. Relay 72 continues to hold the contacts 74, open thereby preventing another circuit from being established through relay 27, the magnet clutch, thecommutator segment 66, the ring S5, and wire 92. ThereforeAv everything remains in this condition until the de )ressed key is released and current is cut o from Wire 25 by thedistributer relays returning to their normal positions. When this happens, however, relay 72, and escapement 76, return to their normal. positions and the only difference is that now stop 78, is obstructed by the prong 113 of the escapement, and the contact spring 111,

bears on commutator segment 66. The re-I sistance R2 is relatively high, say 10 ohms, as compared with the resistance of relay 27, which is, say 1 1/2 ohms. I also employ an extra set of contacts A4, which are norment 76, when the latter is operated. These contacts control. a. shunt or branch circuit which includes an extra pair of contacts B4, normally open but closed upon each other -when the relay 27 is operated, and Which are in series with the winding of said relay. The function of this shunt or branch circuit is to keep the relay locked up to its operated position when theescapement has been operated and until the circuit is opened by the commutator 112. 4 1

' Now suppose another key is depressed. Thereupon the distributer relays corresponding to the particular key whichis depressed, connects the generator' circuits of the selected character of current as determined by the particular relays, to the line springs 103, 105 and 107, as before described. Said relays also complete their own locking circuits, and close the battery circuit to wires 24, 25, as before explained. Now, however, the current flows through wire 25, relay 27 contacts 63, wire 64, commutator section 66, instead of 65, as before, thence, instead df continuing through ring 67, wire 68, and so on, as before, this circuit continuesfrom segment 66, to ring 85, wire 92, contacts 74, and thcncethrough wire 226, Where it divides, one part continuing through the relay 93, to ground or common return at 26, and the other continuing through wire 94, another coil of magnet 73, and to ground orl common return at 26. The completion of this circuit energizes the relay 27, which thereupon performs its functions, as and in the manner above described, of completing the distributer relay locking circuit. The completion of the circuit last above traced also energizes relay 93 and magnet 73. The energization of relay 93causes contact 69, to be opened andcontact 95, to be closed, while the magnet 73, performs its function, the same as above described, of operating the escapement 76, to permit the stop arm 7S, in this instance, to pass, and to coinplete the magnetic clutch circuit, by opening the contact 63. Thereuponl the sleeve 84, and drum 61, make another half revolution, again sending the desired group or combination of impulses over the line wire. When the half revolution of sleeve S4, is completed the commutator 112, again opens the clutcu circuit and also the circuit of relay 27 and the sleeve 84 is arrested, andthe distributer relay locking circuit opened, in the saine manner as before explained. Since the'contact spring 111, is now n Jing on commutator 'segment 65, the circuit of relay 27, and magneti'cclutch 79, cannot again be established until the key isy released and the distributer relays cut ofi1 the current from Wire 25, foi` the reason that, until this current is cut olf, relay 93 will continue to hold contacts 69 .open and hence the circuit of commutator vsegment 65, remains open.

io, is inciicaieci by i-he Sheri; line en the lei handside of each relay speel, indicated in 2. By tracing Jehe windings enel circuits freni any one of the binding er terminals 35, as indicated in Q, of the drawings, ro *che ground of commen return at Q6, it will readily he that a clierenib group er combination of three relays is incluilefl 'with each terminal Take ierininal .36, 'for insance, and, suppose the circuit of battery 1S, lie coinplerecl te said iiincling` post or terminal. Thereupon enr rent will flow through 'the Wires 228, 229, Q30, Q31, Q32, to common return er ground at 26, and the relays l, 8 and 1G, will be included in this circuit. Similarly, it wil he seen that each of the erininals 35, :is included. in circuit with a set, group er combination of three distribuer relays.

For convenience in illustrating ihe inanncr of connecting the battery circuit to the eerininals or binding poses 35, l have shown a :few of jehe 'terminals at 'iop i..

7 38, 40 and eil, iiesignate keys ci the l' key heard, only a ew of the keys being also a receiving apparatus, il arrange Jhe receiver at the sending enel te print nultaneously with the receiver et end, anal ,l arr nge the swicli i2, opened auelnaticflly l y carriage el Jhe receiver at the sending end when such. riege reaches elle cnil of a line occur` ilie battery power is cui eli' i ein ali the ke e olf tile `key board encepr the key 59, :le above stated, elle cncuiiJ or' which rines not incliulc che switch @eneequently, after the carriage reaches the end orf a line and strikes the Snitch l-nini ope. s it, the operalinn oli any key nl: lie keylinaril except the key 35), will have ilo cliect. k'alfine key L,

ileeignecl te controiilu; i'iattery ci. in such iuanneranei lireuejlr llie iles parli lo eii'ccll ille proper sgroup er cmniiini tion el 'impulses necessary lio rei/urn the ear ringe in its stai-ting poiuiA ior anoeiler line liep of each nher Ehe @if a. line in. ease the operator should fail 'to notice that hiel carriage has reached the enel ef iis raifel. it ie ehvione igliat einher means for aceonr plishing this result or YEer notifying the er 7,@ ernter hat his carriage is approaching the end of its line movement, may reacliiy he adapted "ce ehe apparaus.

is .filiere ineliea'cefl, 'ihe keys 3i and 38 are ordinary letter keys of the keuhoard, and 75, illustrate the action and operation of elle keyboard. '.lfhe key is the carriage rui-n key, and keye Li@ and il 1re the 'type or carriage shiftJ keys. l arrange a special circuit for lfliese Shift keys in order tha; may properly perform 'the function of prinvf ing` only capital letters er gures, anni aise ei cmirollingt ille shift-ing ci che type Or ear riagge. in accordance with n'iy i ii i propose te arrange these keys and 'the circ controlled thereby, in such manner eher t may he helci down or l while other keys being degricsee iferin iheir Work notwiihsh keys are lielrl down in til n from :iii lic other keys, :e ali-'ave e incl which have ne when. deL i aneilier key' is depressed.. l also so arrange the circuits conroiierl by the sliii; keys, elle* 'when said keys are releaeefl, after being 1: pressed, they complete eircui; connectie .ff for sciuling Suiiahlc and proper cenilzinaiions of currentV impulses 'to release lie Shirv ing; mechanism which had previously operated.

ihe elecirical. eanneetione eenrelle-f'? hv v0 and lll, are ollmvs: Up f circuit in completed, "egli swich el" 1 re f wire LMS, relay lili, re

nia/eis v g'reiincl er common 'en el relay lil, cles-es the cenizieiis eno` ilie eleeinn ei conac's 55 ce nietes e l iviiey lay el?, wi Q, ene winding of ground er eeunnon return ilu' 2li, i ol: conlecis 5l, compleces circ through, wil i225?, coutacs f @Lil relay il?, is suliicicniY "ireuggh v. ire- 1/HS lio ami en iin'oueli il roup or eomlunaiioxi olf il n 'ffii-e =tneiupleizion ci.' Vr; l: '-1 eireuiL only inmucnary ie relay fl? @perni it', time icrehy iii'eakingf sain l inencaiv coiuplel'ien e" plaire is euliicien'i, since ille aciics'i 5,A iisi'i-mer reiuir.; is so rapiil ilial; il ii ine' circuits, beve iescriheci are fmacl u *"il'iuter 'elayn in eperaecl Musicien heifer.,

closed aiui eperaie lo hei i 'the ep the contacts 53, are broken. Thus, as long as key 40, is held down, its circuit through the distributer is broken, and hence other keys may be operated in the usual manner while the key 40 is heldA depressed. The action of key ell is similar in all respects with that above described with reference to key 110, except that, in this case, the depression of key 111, completes battery circuit through switch 12, wire 43, the contacts of key h11, wire`239, relay 45, to ground or common return at 2G. Relay 45, closes contacts 56 and 5T. The closing of contacts 56 Completes circuit from battery 18 through wire :14, wire 234, contact 5G, wire 2&0, contacts 58. wire 241, terminal 60, and on through the distributer relays. The closing of contacts 57, completes the battery circuit through wire 44, Wire 23-1, contacts 57, wire 235, relay 48, to ground or return. The energization of relay 47, opens contacts 58, thereby breaking the distributer circuit through terminal 60, but before this circuit is broken the locking circuits of the corresponding distributer relays have been completed as in the case of the operation of key 4J), above explained.

YIt is above noted that when either of 4the keys 410 or 411 is depressed a circuit is completed through relay A1S. This relay, when energized, closes contacts 50 and 51, and said relay maintained energized, that is, its circuit remains closed as, long as either of the shift keys 110 or 41 is held. down. When the depressed slxift key is released, however, I pro'- vide means whereby a group or combination of impulses are sent to effect the starting up of the sender. To explain this. operation it must be remembered, as explained above, that relay 27, see Fig. L1-, and which I call the unlocking relay, is always in the position shown, except during the time of revolution of the automatic sender, and no matter whether the operator continues to hold a key down or not relay 27 will always return to its normal position as soon as' the automatic serder has completed its work and shifts the commutator brush 111 from one segment of the commutator 112, to the other, since the circuit of said relay is con* trelled by said commutator. rlhe relay 27, when. energized opens a. circuit between the contacts (31, and 30, and closes a circuit between contacts 30, and 31, and when the relay is in its normal position the last named contacts arf` opened while contacts 3()v and 61, are closed. Battery 18, Fig. 3, is directly connected through wire 23, and wire 2,9, to contact 30. 1vllhen the relay 27 is in its normal position current will flow from battery to Contact 30, to Contact 61, and wire 97, Fig. 4, to wire 9S, Fig. 1, and if a shift key is being held down, that is, if relay 18 is energized, then the current will continue through Wire 98, contacts 51,

and through the other Winding of said relay 1S to ground or common return at 2, thereby virtually locking the relay 1S in its operated position until relay 27, visr again operated, aiul'firrespective of whether the 70 shift key is released or not. f the shift key .is held depressed, then the relay 27 will` operate every time any other key of the key board is operated. rl`hc operation of another key would ordinarily operate relay 27, to break the circuit of relay 48 but relay 48 has two circuits as above explained, one'controlled by the relay 27, and one controlled by each of the shiftkeys, and hence said relay is held in operated position as long as the shift key is held depressed and is only released when. the shift key is released, and even then, the relay i18 remains in operated position until the relay 27 is again operated. But this occurs very quickly. When relay 4 7 returns to normal, by the release of the shift key, current will flow from battery 18, through wire 44, wire 23%, wire 248,0011- tacts 50, wire 2119, contacts 52, Wire 250, terminal G2, and on through the distributer, V thereby sending the required group or coinbination of in'ipulses to effect the starting of the sender. TW hen the sender is started up the circuit of relay 27, which is controlled by the commutator 112, is again completed `thereby causing said relay to open the circuit of relay 18, by separating contacts 30 and 61. Relay 4S, thereupon returns to normal. The ope ation above described with reference to starting the sender is. the same whichever key il() or 41 is released, the same group or combination of impulses correspending to the circuit of terminal 62, being sent in either case.

From the foregoing description it will be seen that I provide an exceedingly Simple printing telegraph apparatus wherein the proper performance of the functions of the various parts is insured, wherein` the'opera# tion is carried on as rapidly as the keys of a keyboard similar to that employed in a typewriting machine, can be manipulated,

- and every precaution is taken againstinterp ference of currents and wherein the various groups or combinations of impulses A'are' 115 Imade up of currents of various characters,l and wherein absolute control is maintained over all working parts 'and circuits.

It is believed the operation of the apparatus will be fully and clearly understood from the foregoing description taken in-,connection with the accompanying drawings,

.lt is obvious that many changes inthe details of construction and `arrar'igement of parts. and many variationstherein might V readily occur to persons skilled in the art and still fall within the spirit and scope of my invention. do not desire therefore, to be limited or restricted to theexact details shown and described, but my invention cov- 30 ers and includes broadly the various combinations and arrangements recited in the claims.

Having now set forth the object and nature' of my invention, and a construction illustrative of an operative embodiment of the same, and having explained and pointed out the purpose, function and mode of operation thereof, what l claim as new and useful and of my own invention, and desire to secure by Letters Patent is l. In a printing telegraph apparatus, a line circuit, in combination with a series of keys, a series of relays having circuits, each key adapted to control the circuit of a definite group of relays, circuits for electric impulses of differing character controlled by said relays', means whereby only one relay of each group may be edectively Aoperated at a time, and means Vfor connecting said impulse circuits to the line circuit.

2. In a printing telegraph apparatus, a line circuit, a series of keys, a series of relays having circuits, each key adapted to control the circuit of' a predetermined group of relays, means whereby when one key is operated the operation of the other keys is rendered ineffective, circuits for electrical impulses of differing characteristics controlled by said relays, and means controlled by the relays for connecting said impulse circuits to the line circuit. i

l. In a printing apparatus, a line circuit, a series of keys, a series of relays having circuits, each key adapted to control the circuit of a predetermined group of relays, means whereby when one key is operated the operation of the other keys is rendered ineiective, circuits for electrical impulses of dii'ering characteristics controlled by said relays, and means controlled by the relays for successively connecting said impulse circuits to the line circuit.

4. In a printingl telegraph apparatus, a Series of relays having circuits, means for controlling the'circuits yof said relays in groups or combinations, means whereby when one group of relay circuits are in operation the other groups are rendered inoperative, electrical circuits for currents of differing characteristics controlled by said relays, a line circuit and sending mechanism for connecting said pressure circuits to the line, said sending mechanism also controlled by said relays.

5. ln 'a printing telegraph apparatus, a series of relays having circuits, electric pressure circuits controlled by said relays, a line circuit and sending apparatus, also controlled by said relays for connecting said pressure circuits to line.

6. ln a printing telegraph apparatus, a line circuit, a series of relays arranged in groups, connections for currents of differ'- ing characteristics, and having circuits,

Madere means controlled by said relays for connecting said circuits to line, means for controlling the circuits of said relays in predetermined combinations and means whereby when one combination lis in operation the others are rendered inoperative.

7. In a printing telegraph apparatus, a series of relays arranged in groups, a line circuit, electric pressure circuits, means controlled by said relays for connecting said circuits to line, and means whereby when one relay of a group is operated the other members of the same group are inoperative.

8. ln a printing telegraph. apparatus, relays arranged in groups, electric pressure circuits controlled by said relays, means for controlling the circuits of said relays in combinations, and means whereby, when a relay of one group is operated the other relays in the same group are rendered in- I operative.

9,. In a printing telegraph apparatus, electric pressure circuits, a line circuit, sending apparatus including contacts arranged to connect said pressure circuits to the line circuit in predetermined groups, and relays for controlling said sending apparatus.

l0. ln a printing telegraphapparatus, electric pressure circuits, a line circuit, sending apparatus including contacts arranged to connect said pressure circuits to the line circuit in predetermined groups, relays fer controlling said sending apparatus, and key mechanism for controlling the circuits of the relays. l

1l. ln a printing telegraph apparatus, electric pressure circuits controlling current pressures of varying character, a line circuit, sending apparatus for connecting the pressure-circuits to the line circuit, relays operating to control the sending apparatus to effect such line connections in definite sequence and means whereby when one relay is operated the operation of theothers is rendered ineffectual.

lf2. In a printing telegraph apparatus, electric pressure circuits controlling current pressure of varying character, a line circuit, sending apparatus for connecting said pressure circuits to the linecircuit, keycontrolled relays for controlling said sending apparatus to effect said connections in predetermined groups and means whereby when one key is operated the operation of the other keys is rendered ineffectual.

1 13. In a printingtelegraph apparatus, electric pressure circuits for controlling current pressures of varying character, a line circuit, sending apparatus for connecting said pressure circuits to the line circuit,'key. con- 1 trolled relay mechanism for controlling 'the sending mechanism and means whereby when one key 1s operated the-operation of the other keys is rendered inedectual.

i,isaere n.3,

le; In a printing telegraph apparatus, electric pressure circuits for controlling cur- .rent pressures of varying strength, a line circuit, means for connecting said pressure and line circuits, relays for controlling the connecting means, and key mechanism for controlling the circuits of said relays in predetermined groups.

15. In-a printing telegraph apparatus, electric pressure circuits for controlling current pressures of varying strength, a line circuit, means for connecting said pressure and line circuits, relays arranged in groups for controlling said connecting means, and

p a key mechanism for controlling the circuits of said relays in predetermined order. 16. In a printing telegraph apparatus, electric pressure circuits, a line circuit, a sending apparatus for connecting said pressure circuits to the line, electrically operated clutch mechanism for operating said sending apparatus, circuit connections therefor, and a commutator for controlling said ciri cuit connections.

v215 17. ln'a printing telegraph apparatus, lelectric pressure circuits, a line circuit, a sending apparatus for controlling the connections of said pressure circuits to the line circuit, a commutator, line completing contact devices, means for successively closing said contact devices upon each other, an electrically operated clutch for controlling said commutator, the circuit of said clutch being controlled by said com mutator` 18. In a printing telegraph apparatus, electric pressure circuits, a line circuit, and means for controlling connections of said pressure and line circuits including a ifo-1 4.A tatable drum, contacts adapted to be succes' 40 sively closed by said drum, an electric clutch for controlling said'drum, and a commuta tor for controlling the circuit connections of said clutch.

liln a printing telegraph apparatus,

electric pressure circuits, a line circuit, a

sending apparatus for controlling the connections of said pressure and line circuits, a

-magnetic clutch mechanism for controlling .the operation of said ysending apparatus, a

circuit therefor, and a commutator for opening and closing said circuit.

20. iin a printing telegraph apparatus, electric pressure circuits for currents of differing characteristics, a line circuit, and a Z-sending apparatus for controlling the con* A nections of said pressure circuits to the line circuit and including an electrically operated clutch device, a circuit therefor, and means for automatically opening and clos- 50 ing said circuit.

, 21.1n a printing telegraph apparatus, electric pressure circuits, a line circuit, apparatus for controlling the connections of said pressure and line circuits, and includ @5 n' a sending apparatus, automatic escapen ment devices for controlling the operation of said sendingapparatus and alternately acting coils for controlling the escapement devices.

22. In -a printing telegraph apparatus, electric pressure circuits, a line circuit, and a sending apparatus for controlling the connections of said pressure and line circuits, stop mechanism for controlling the operation of said sending apparatus and alternately acting coils for controlling said stop mechanism.

23. In a printing telegraph apparatus, electric pressure circuits, a line circuit, Aand a sending'apparatus, said sending apparatus loeing operable in continuous direction, means for periodically arresting said sending apparatus, said means including stop devices, and alternately acting relays and a comm'utator for controlling said stop devices.

24. ln a printing telegraph apparatus, electric pressure circuits for currents of diftering characteristics, a line circuit, and a sending apparatus operating to connectv the pressure circuits to the line, means for operating said sending apparatus in continu ous direction, stop devices therefor, and alternately acting electrical devices for controlling the stop devices to automatically arrest said sending apparatus periodically. 25. In a printing telegraph apparatus, electric pressure circuits, and a line circuit, in combination with a sending apparatus including contacts, a rotary drum for closing said contacts successively, an electrically operated clutch for intermittently operating vsaid drum, va circuit therefor, and a com- .mutator for opening and closing said circuit. v

Qdln a printing telegraph apparatus, 'pressure circuits, and a linecircuit, in combination with a series of contacts for controlling the connections of the pressure circuits to the line circuit, a rotary drum 'for closing said contacts upon each other in succession, and alternately acting means for intermittently. rotating said drum in. continuous direction including a clutch, and means for automatically stopping and starting the clutch.

27. In a printing telegraph apparatus, pressure circuits, and a line circiut, incombination Witlrcontacts, means for successively closing said contacts, a stop `device for controlling said Contact closing means, and alternately acting coils and a commutator for controlling the stop device.

28. ln a printing telegraph apparatus, pressure circuits, and a line circuit, in combination With a sending apparatus' including a series of contacts,` a drum for closing said contacts, a sleeve carrying said drum, means for rotating said sleeve in continuons direction, including ,an electrically op- 30. ln a printing telegraph apparatus, a.

sending apparatus including a continuously rotating shaft, a sleeve mounted thereon, magnetic clutch devices for coupling said sleeve and shaft, a commutator for Controlling the circuit. of said magnetic devices, pressure circuits and a line circuit arranged to be'connected together and means carried by said sleeve for controlling the connections of said pressure and line circuits.

3l. In a printing telegraph apparatus,

pressure circuits, and a line circuit, in combination with a sending apparatus -including a continuously rotating shaft, a sleeve mounted thereon, a magnetic clutch hfor coupling said shaft and sleeve, a commutatoil carried by said sleeve and arranged to control the circuit of said magnetic clutch, and means carried by said sleeve for controlling the connections of said line and presure circuits.

ln a printing telegraph apparatus,l pressure circuits, and a line circuit, in com-k bination With a sending apparatus, for coupling up the pressure and line circuits, and including a contact device, a magnetic clutch for operating said Contact device and a commutator for controlling the circuit of said magnetic clutch whereby said contact device is intermittently operated.

33., In a printing telegraph apparatus, a sending mechanism, including a contact controlling device; a magnetic clutch for operating said4 device and a commutator and cooperating contact springs for automatically controlling the circuit of said clutch.

34. ln a printing' telegraph apparatus, a sending mechanism including a Contact making device, a magnetic clutch foroperating said device, an escapement mechanism for periodically arresting said-` contact device, a magnet for controlling said escapement and means for closing the circuit of said magnet in advance of the closing of the circuit of said clutch. l

35. ln a printing telegraph apparatus, a sending mechanism including a contact device,\an escapement for intermittently arresting said device, operatingmechanism for said contact device and means for operating said escapement in advance of the action of said Aoperating means.

, tinuous nii/ideaa- 36, ln a printing telegraph apparatus, a sending mechanism, including a continuously rotating shaft, a sleeve mounted thereon and carrying a commutator, a drum also mounted on said sleeve contacts controlled by said drum, stop arms carried by said sleeve, a magnetic clutch for coupling said sleeve to the shaft, an escapement operating with said stop arms, the circuit of said clutch being controlled by said commutator and automatic devices forr completing the circuit of said clutch. i'

37. lin a printing telegraph apparatus, sending mechanism including a magnetic clutch, a circuit therefor, and an escapement mechanism and means operated by said es- 'capement mechanism for controlling the circuit of said clutch.

38. ln a printing telegraph apparatus, a

sending mechanism, means for operating the same includinga clutch, an escapement device for intermittently arresting said sending mechanism, said operating means being controlled hy said escapement.

39. ln a-printing telegraph apparatus, a sendino" mechanism including a contact device, eectrical'devices for operating said contactdevice, means for periodically arresting said Contact device, said means arranged to control the circuit of said electrical devices.

i-0. ln a printing telegraph apparatus, a sending mechanism including a continuously revolving shaft, a sleeve mounted thereon, a clutch for coupling said sleeve to said shaft, a commutator carried by said sleeve vand arranged in the circuit of said n clutch, an escapement mechanism for periodically arresting the rotating movement of said shaft, means for operating said escapement mechanism and means operated by the.

said escapement for short circuiting said clutch. r

lil. ln a printing telegraph apparatus, a

sending mechanism including a rotatable` drum, means for rotatively actuating said drum in continuous direction, astop mech'- anism for arresting said drum at each half revolution thereof, and including a magnet,

a circuit for said magnet, a commutator for controlling said circuit, and contacts controlled by said drum.

42. ln a printing telegraph apparatus, a:

line-`y circuit, pressure circuits, Contact de vices for connecting said line' and pressure? circuits, a sending mechanism including a drum, means for rotating said drum in ccndirection, electrically 3 operated means for automatically arresting said drum at the completion of half revolutions thereof said contact devices controlled hy said drum.

43. ln a printing telegraph apparatus, sending mechanism including a rotatable drum, means for rotating said, drum com I madera tinuous direction, electrically operated means for arresting said drum at the completion of each balil revolution thereof and a series contacts arranged to be successively closed during the rotative movements of said drum.

1.1.4. ln a printing telegraph apparatus, sending mechanism., actuat devices there for, stop arms Ifor intermittently arresting said sending mechanism, said stop arms being of triangular shape, and a forked escapei'nent device cooperating with said stop arms, and against which the edges of 4the triangular parts of the stop arms cooperate, and means Jfor controlling said escapement device.

45. ln a printing telegraph apparatus, a source of electric pressure, independent circuits therefor, a resistance arranged in one of said circuits, key mechanism for controlling all of said circuits in predetermined groups, devices for completing said circuits to the line and alternately acting magnets for automatically controlling said devices.

46. In a printing telegraph apparatus, a pair of generators, line circuit connections to the positive side of one of the generatorsj similar connections 'to the negative side or the other of said generators, a line circuit, a key mechanism, a rotatable drum, and a rotatable commutator for controllinv' said drum, said key mechanism, drum an commutator constituting devices for controlling connections of said generator' and line circuits.

47. ln a printing telegraph apparatus, source ol. electrical pressure, circuits tiere for, relays for controlling said circuits, said relays being arranged in groups, each of said circuits being controlled Aby one of the relays in each of the various groups, a send ing mechanism, starting circuits therefor, said relays also controlling said staring civ-cuits and means for controlling said relays.

48. ln a printing telegraph apparatus, a source oi electric pressure, circuits therefor, a series of relays arranged in groups, each of said circuits being controlled by one of the relays in each group, a line circuit and automatic devices for completing said pressure circuits to the line circuit. 49. ln a printing teleeraph apparatus, a source ot electric pressure, circuits therefor, relays for controlling said circuits, said relays arranged in groups, cooperating mein.- bers of each group controlling the said pressure circuits, a key mechanism for controlling said relays in predetermined combinations, a line circuit, and means for com.- pleting the pressure circuits as selected by said relays to the line circuit.

50. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, contact devices arranged in said circuits,

relays for controllingl said devices, kkey mechanisms for controlling said relays, a

line circuit and automatic devices for completing the pressure circuits to said `line circuits.

51. ln a printing telegraph apparatus, a source of electric pressure, .circuits therefor, relays for controlling said circuits, said relays arranged in groups, each 'pressure circuit being controlled by one relay in each group, a sending mechanism, a starting circuit therelor, said relays also controlling starting circuit, and means whereby when any relay of a group is energized all the other relays of the same group are rendered inoperative.

52. ln a printing telegraph apparatus, a source of electric pressure circuits therefor, relays for controlling said circuits, said relays arranged in groups, one relay of each group controlling each pressure circuit, and

means for simultaneously energizing said relays in combinations including one relay of each group.

ln a printing telegraph apparatus, a source of electric pressure, Vcircuits therefor, relays for controlling said circuits, said rclays arranged in groups, each circuit being controlled by one of' the relays of cach of" the several groups, and means whereby when one relay of a group is energized all the other relays of the same group are rendered inoperative, means for energizing the said relays in predetermined combinations, a line circuit, and means for completing the pressure circuits to said line circuit.

In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays vlor controlling said circuits, a send ing mechanism, a starting circuit therefor, said relays also controlling said starting circuit, means for controlling said. relays and means for locking s'aid relays when energized in their operated position. v

55. lnv a printing telegraph' apparatus,a source of electric pressure, circuits therefor, rela-ys for controlling said circuits, a sending mechanism, a starting circuit therefor, said relays also controlling saidv starting circuit, means for controlling said relays, and a locking circuit for each relay` 5G. ln a 'printing telegraph apparatus, `a source of electric pressure, circuits therefor, relays for controlling said circuits, a sending' mechanism, a starting circuit therefor, said relays also controlling said starting circuit, means for encrgizinfr said relays in predetermined groups or combinations, and a locking circuit foreach relay, said locking circuit being made by the energization of such relay.

57. .in a printing telegraph apparatus, a source of electric pressure, circuits therefor, including contacts, relays for making and breaking said contacts, a sending mecha- .ner-

nism, a starting circuit therefor, said relays also controlling said starting circuit, means for controlling said relays and a locking circuit for said relays, and means for automatically controlling said locking circuits.

58. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controlling said circuits, sending mechanism for completing the pressure circuits to the line, locking circuits for said relays, means 'for controlling the energization circuits of said relays, and means operated .by said sending mechanism for controlling said locking circuits.

59. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controlling said circuits, means for energizing said relays in predetermined combinations or groups, a locking circuit for each relay, and contacts arranged in each locking circuit and operated by the energization of its associated relay, a sending mecha nism for completing the line connection of said pressure circuits, a relay controlled by said sending mechanism for controlling all of said locking circuits.

G0. In a printing telegraph apparatus, a source of electric pressure, circuits therefor,- relays for controlling said circuits, means for controlling the circuits of said relays, a sending mechanism for completing said pressure circuits to the line, electric devices for controlling said sending mechanism, said relays controlling the circuits of said electric devices.

Gl. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controlling said circuits, means for controlling the circuits of said relays in predetermined combinations, a sending mechanism for completing thc pressure circuits to the line, electric devices for controlling said sending mechanism and contacts arranged in the circuits of said electric devices, said contacts controlled by said relays.

(S2-In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controllingfsaid circuits, a sending mechanism, a starting circuit for said sending mechanism and means controlled by said relays for controlling said starting cir-- cuit.

63. In a printing telegraph apparatus, a

source of electric pressure, circuits therefor, relays for controlling said circuits, a send-- ing mechanism Ior completing said circuits Ato the line, a key mechanism for controlling `the circuits of said relays and a starting circuit for said sending mechanism arranged to be closed by said relays when energize 64. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, means for controlling said circuits, a sending mechanism including a commutator, a starting circuit for said sending mechanism and including said commutator and means for controlling said starting circuit.

65. In a printing telegraph apparatus, a series of keys, a circuit controlled by each of said keys, a distributer and a sending mechanism controlled by said key circuits, and an automatic switch arranged in-said key circuits.

66. In a printing telegraph apparatus, a series of keys, a circuit controlled by each key, a corresponding series of terminals, a distributer mechanism arranged in groups of elements, each group being controlled by the circuit through a terminal, and a sending mechanism controlled by said distributer 30 elements.

67. In a printing telegraph apparatus, .a source of electric pressure, circuits therefor, relays for controlling said circuits, energizing circuits for said relays, and key mechanisms for controlling said energizing circuits, and an automatic switch device arranged in the key controlled circuits.

68: In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controlling said circuits, energizing circuits for said relays, keys for controlling said energizing circuits-and means whereby when any one of said keys is operated all the other key controlled circuits are inoperative.

69. In a printing telegraph apparatus, a source of electric pressure, circuits therefor, relays for controlling said circuits said relays arranged in groups, energizing circuits 10o for said relays, a key mechanism for controlling. predetermined combinations of said relays in said groups, and means whereby when any key is operated the key controlled circuits of the other relays are rendered inoperative.

70. In a printing telegraphapparatus, aV source of electric pressure, circuits therefor, relays for controlling said circuits, energizing circuits for said relays, a series of keys, 11o each key controlling the energizing circuits of a predetermined group or combination of relays, and means whereby when one key is operated, the energizing circuits controlled by the other keys are rendered inopiis erative.

7l. In a printing telegraph apparatus, a source of electric pressure, a line circuit, a key mechanism for controlling the connections of said pressure and line circuits, 'and 120 a carriageoperated switch arranged in the key controlled circuits.

-72. In a printing telegraph apparatus va line circuit, a source of electrical pressure, circuits therefor meansfor completing thev pressure circuits to the line in combination with means for rendering said circuit completing mechanism inoperative when the printing apparatus has completed a line of printing. y y iso 

